Malicious PDF — malware analysis report

Static analysis result for SHA-256 65aa00f804b2d58d…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 08:29:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1f4ac105f12d9148ebdf5f1574a9413d SHA-1: 3436ff0506073079a2437ff9d1ca2854cb35ffde SHA-256: 65aa00f804b2d58d3bcf59aab7f5a6bddddfc04802cc746a1f6ced1c2bd04602
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://zajinet.ru/award?keyword=how+to+replace+kenmore+bottom+freezer+ice+maker PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368768/normal_60382f6c65b7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427077/normal_60100c5664a41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_60114357257ba.pdfIn PDF document text
    • http://eroganoficial.site/9846130691195cym.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373985/normal_5feb984231a5a.pdfIn PDF document text
    • http://veronaital.space/baladoribajrgvm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5fe2b0365e0cf.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekogi/UgjgubR/national_geographic_magazine_customer_service_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/xizefonuma/TBzIhed/the_2nd_robot_battle_wars_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_60328249e9d14.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/cgftDCB/vice_city_game_online_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370071/normal_601587c5ea457.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/fOghhg6/stack_buffer_overflow_example.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501201/normal_6000fb8b3fff9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/extent_report_for_testng_parallel_execution.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/73038687327.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/happy_new_year_abba_sheet_music.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01A 5288 bytes
SHA-256: a19ed5ec639e624e1b47abde8385464f1722d34f7fa2b9c9e7083299c8ff5233
font_01_sfnt_off0000f219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 10256 bytes
SHA-256: a9138ed589915873401f123f6c33f3dc9541ff1c65a18c509d557d60ce4a559c